<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<video  poster="a.jpg"
       loop="loop" muted="muted"  autoplay controls
       style="width: 1283.56px; height: 722px;">
  <source src="b.mp4" type="audio/mp4">
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</video>
</body>
</html>